code: def data(val: float):
      """Shorthand to override default units with "data", for e.g. `Ray.length`."""
      return value(val, units="data")
  
file_path: bokeh/examples/models/gauges.py
imports: from math import pi
  from typing import Any, Literal
  from bokeh.core.properties import expr, value
  from bokeh.document import Document
  from bokeh.embed import file_html
  from bokeh.models import Arc, Circle, ColumnDataSource, Plot, PolarTransform, Range1d, Ray, Text
  from bokeh.util.browser import view
label_desc: Use image node_id 1 for calling a global function with example usage: data(val) and returns: value